C) connector, Power fault, Alarm reset – SUPER MICRO Computer I2DMR-8G2 User Manual

Page 38: Smb power (i, C connector

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SUPER i2DMR-8G2/i2DMR-iG2 User's Manual

Power Fault

Connect a cable from your power

supply to the U62 header to pro-

vide warning of power supply fail-

u r e . T h i s w a r n i n g s i g n a l i s

passed through the PWR_LED pin

on U66 to indicate of a power fail-

ure on the chassis. See the table

on the right for pin definitions.

Note: This feature is only available when using

redundant Supermicro power supplies.

SMB

A S y s t e m M a n a g e m e n t B u s

header is located at J22. Connect

the appropriate cable here to uti-

lize SMB on your system.

Power Fault

Pin Definitions (U62)

Pin

Number

1
2
3
4

Definition

P/S 1 Fail Signal
P/S 2 Fail Signal
P/S 3 Fail Signal
Reset (from MB)

Alarm Reset

The system will notify you in the

event of a power supply failure.

This feature assumes that Super-

m i c r o r e d u n d a n t p o w e r s u p p l y

units are installed in the chassis.

If you only have a single power

supply installed, you should dis-

able this (the default setting) with

(CN5) to prevent false alarms.

S e e t h e t a b l e o n t h e r i g h t f o r

jumper settings.

(The Alarm Re-

set header is located next to
t h e P W R F a u l t h e a d e r a n d
close to Fan3.)

SMB Header

Pin Definitions (J22)

Pin

Number

1
2
3
4

Definition

Data

Ground

Clock

No Connection

SMB Power (I

2

C)

Connector

I

2

C Connector

(J27), located be-

tween the PWR ForceOn Header

and the PWR Fault header, moni-

tors the status of PWR Supply,

Fan and system temperature.

SMB PWR

Pin Definitions (J27)

Pin #

1
2
3
4
5

Definition

Clock

Data

N/A
N/A
N/A

Jumper

Position

Open

Closed

Definition

Enabled

Disabled

Alarm Reset Jumper

Settings

(CN5)

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